| Issue |
A&A
Volume 421, Number 2, July II 2004
|
|
|---|---|---|
| Page(s) | 729 - 734 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20034131 | |
| Published online | 22 June 2004 | |
A model to interpret the intensity-velocity and velocity-velocity phase differences from solar observations obtained with magneto-optical filters
INAF, Osservatorio Astronomico di Capodimonte, via Moiarello 16, 80131 Napoli, Italy
Corresponding author: P. F. Moretti, moretti@na.astro.it
Received:
29
July
2003
Accepted:
16
February
2004
The intensity (I) and velocity (V) signals obtained using magneto-optical
filters (MOF), are not independent of each other. The induced spurious signals
affect the intensity-velocity phase difference measurements and the effect is
referred to as a 
crosstalk (Moretti & Severino [CITE]). We show a new model to
interpret the phase measurements and, in particular, its application
to the interpretation of the data obtained with sodium MOF systems.
The model can also be applied to correct the velocity-velocity phase from multi layer
observations.
Key words: Sun: oscillations / instrumentation: miscellaneous
© ESO, 2004
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